Drill machine



Jhly 28 1931. c. A; wiLus ETAL 1,816,708

DRILL MACHINE Filed June 28, 1950 2 Sheets-Sheet l vmEssEs f awxewzsli, W

afirg i7u INE Filed June 28, 1950 2 Sheets-s 2 m Jili WITNESSES Patented July 28, 1931 UNITEDjSTATES OF CHANUTE, KANSAS, A CORPORATION OF KANSAS DRILL MACHINE Application filed June 28,

This invention appertains to improvements in drilling machines generally and more particularly to the spudding type thereof as is exemplified in my co-pending application filed October 30, 1929, Serial N 0. 403,613.

An object of the invention is to provide a shock absorbing means which is cooperative with the center pole of the drill rig to allow the same a limited relative vertical movement under ja'rs, incident to the drilling or casingpulling and running operations, in order to prevent such jars being transmitted to the remainder of the rig.

Another object of theinvention has to do with the provision of an improved form of jack, which, inaddition to its usual function in the operation of the machine, actsto facilitate the withdrawal of a tool string or the like from the hole being drilled, by allowing the guide pulleys thereon for the drill line to have sidewise movement on their supporting shafts, in order that the line will properly spool on the winding and reeling drum below the jack, during such withdrawal operation, and also to allow the drilling or spudding operation to be performed with the guide pulleys always in line with the point of take off of the drill line from thedrum.

A further object of the invention resides in the provision of a locking, device for the jack aforesaid which is designed to effectively hold the jack against movement during the withdrawal of a tool string or the like froma hole and to provide a suflicient amount of slack in the belt drive of the jack in orderthat power will be disconnected from the latter, Without affecting its continued application to the other operative parts of the machine.

Another object of, the invention lies in the provision in a wheeled trailer to be positioned at a distance backwardly of the supporting base for the lowering down upon the same of the mast of the drill rig for ease in transportation from one point of use to another, the forwardly directed end of the mast, when in prone position, being utilized for draft purposes, as by having the 1930. Serial No. 464,616.

tractor, usually employed for a drilling operation with the rig, suitably coupled thereto.

VVit-h the foregoing and other equally important objects and advantages in view, the invention resides in the certain new and useful combination, construction and arrangement of parts, as will behereinafter more fully described, set forth in the'appended claims, and illustrated in the accompanying drawings in which Figure l is a fragmentary front elevation of the improved machine,

Figure 2 is a side elevation thereof,

Figure 3 is a slightly enlarged horizontal section taken on the line 3-3 of Figure 2,

Figure 4 is an enlarged side elevation of an intermediate fragmentary portion "of the mast, and

Figure 5 is a view similar to that of Figure 4, but taken on the line 55 of Figure 4.

Referring to the drawings, wherein like characters of reference designate 'corresponding parts in the several views thereof, the embodiment. of the invention, as shown therein by way of example only, is, constituted generally in a form of shock absorber to prevent jars and jolts on the center pole 15 of the rig,'during the drilling or spudding operation, from being transmitted to the mast. timbers 12- rising from the supporting base 11.

To this end, a pair of mast timbers 12 are attached to the base ll at their lower ends and inclined toward each other so that their free or upper ends are brought into closely spaced relation, in which position they are secured by a clamp 13. This clamp 13 is looped about the timber ends and has its opposite ends projected beyond the outer faces of the timbers and shaped to form hooks 13 for the securing guy wires 14 thereto.

Depending through the enclosed spacev thus provided between the timbers 12 and the opposite sides of the clamp 13 is the center pole 15 having a guide 16 engaged with the timbers 12 at a point below the clamp 13. The lower end of the pole ,15

I timbers rise vertically depends between a pair of bearing blocks or plates 17 abutting the opposed faces of the 12 and supported in place by a two part clamp member 18 secured at opposite sides of the timbers at a point below the guide 16. These clamps 13 and 18 form additional guides for the center during its limited vertical movement 1mparted thereto by jars imparted to the same by the operative movements of the ring.

The upper ends of the mast timbers 12 are bevelled off at their inner sides to dispose the opposed faces thereof in substantially parallel relation to permit of sliding contact therewith of the adjacent side faces of the center pole in order to lend stability to the latter in its rectilinear movements aforesaid.

The extreme upper end of the center pole 15 is bifurcated for the journalling therein of a pulley 19 over which the usual drill line 20 is trained. Immediately below the pulley 19, a second pulley 21 is provided for the training thereover of a second'line 22 to the working end of which a bailer or the like 23 is attached. Guy wires 24 are secured to the end of the center pole 15 in a usual manner at a point just below the pulleys 19 and 21.

Spaced at a short distance below the lower end of the center pole 15 is a cross member 25 on the upper side of which, between the mast timbers 12, are a plurality of coiled springs 26 forming the elements of a shock absorber for the pole. These springs 26 from the member 25 andhave heir upper ends connecting an attaching shoe 27 secured to the lower end of the center pole 15. Thus, when the center pole moves downwardly, under the force ofa jar on the lines 20 or 22, the springs 26 are compressed and absorb the shock which would otherwise be imparted to the mast.

Mounted on the rear sides of the mast timbers 12 at a distance below the cross member 25 are a pair of horizontally alined bearings 28 in which a shaft 29 is journalled for the rocking support thereon of a jack structure.

This jack structure is made up of two alined frames 30 and 30 of substantially triangular form in each of the three corner portions thereof shafts 31, 32 and 33 are mounted. The supporting shaft 29 passes through the approximate centers of the uppermost sides of the frames and small pulleys 34 and 35 are loosely mounted on the shafts 31 and 32 respectively, by which arrangement one end of the drill cable passes to the pulley 19 at the upper end of the center pole 15 after being trained about the upper and and under outer of pulley 34. The other end passes to a winding and reeling drum 36 mounted on a shaft 37 journalled in horipole 15 outer side of the pulley 35 zontally alined bearings 38 adjacent the lower ends of the mast timbers 12.

The usual eccentric wheel 39 is mounted on the shaft 33 which is carried at the corner of the jack disposed in line with the shaft 29 and is connected by a belt 40 to a pulley 41 loosely mounted on the power shaft 42. The power shaft 42 is journalled transversely of the mast timbers 12 in bearings 43 which are secured in place on the latter at a distance below the bearings 28 of the j ack supporting shaft 29.

Power is applied to a pulley 44 keyed on one end of the shaft 42 and driven by means of a belt 45 connected to a suitable power source (not shown), which may be in the form of a tractor (not shown) to be employed as the draft means for hauling the drill rig from one place of use to another. I

As described in my copending application aforesaid, the power shaft 42 will be equipped with a large friction gear adapted to be engaged by smaller shiftable friction gears 48 and 49 keyed on the eccentrically mounted shaft of a sand reel 50 and a counter shaft 51 respectively, the sand reel shaft being mounted in eccentric bearings 53 and the counter shaft 51 in similar bearings 54 carried by the mast at points above and below the power shaft 42, sub stantially as shown in Figures 1 and 2. A suitable clutch will be provided on the power shaft 42 for actuation by the hand lever 55 to alternately connect and disconnect the pulley 41 therewith as required.

Also the'counter shaft 51 will have a small spur gear 56 thereon for engagement with a large spur gear57 keyed on the shaft 37 of the winding and reeling drum 36 when the shaft 51 is properly shifted for the purpose, the shifting of the shafts 50 and 51 being accomplished in an ordinary manner.

In order to hold the jack stationary, as is desired when'it is desired or becomes necessary to pull tools out of the hole being drilled at the moment, a locking device 58 is provided to that end and it consists in an arm carried at one end on a shaft 59 supported in bearings 60 secured in transversely aligned relation at oneside of the mast timbers 12 at a distance above the bearings 28 of theijack frame 30. v

The under side of the free end portion of the lock arm 58 is notched, as at 61, for engagement over the shaft 31 at theuppermost corner of the jack, when the same is lowered from its normally elevated and suspended position at the end of an operating cable or line 62. This cable or line 62 is trained over a pulley 63 mounted near the top'end of the mast and has its outer end reaching to the lower part of the latter in order to be secured when the lock arm 58 is 1 raised from engagement with the shaft 31 of the jack. The lower side of the lock arm 58 is preferably protected by a metal shoe 6% which is notched correspondingly to the shaft engaging notch in the arm as aforesaid.

Then the lock arm 58 is lowered into engagement with the shaft 31 at the upper side of the jack 30, the latter is held stationary in its lowest position, so that the belt 40 is slacked sufficiently that no power will be transmitted from the power pulley 41 to the eccentric wheel 39, thus obviating any necessity for the shutting down of the power source from the remainder of the drilling apparatus, whenever it becomes necessary to pull the tools from the hole being drilled. Drilling or spudding operations may be immediately started up upon the raising of the lock arm 58 from its engagement with the shaft 31 and securing the lower end of the cable or line to hold the same back against the mast, as indicated in Figure 2, when the jack 30 will be released for its usual operative movements.

Vithout further description, it is thought that the features and advantages of the invention will be readily apparent to those skilled in the art, and it Wlll of course be understood that changes in form, proportion and minor details of construction may be resorted to, without departing from the spirit of the invention or its scope as claimed.

e claim:

I. A drill rig including a mast, a spudding line jack pivotally mounted on the said mast, and means jack against operative movements without necessitating the shut down of the power applied to the drill rig.

2. A drill rig including a mast, a spudding line jack pivotally mounted on the said mast, and means pivotally mounted on the mast and adapted to lock the jack against operative movements without necessitatin the shut down of the power applied to the drill rig.

3. A drill rig including a mast, a spudding line jack pivotally mounted on the said mast, a lock member pivotally mounted on the mast, and means normally disposed to sustain said lock member in inoperative position, said lock member being adapted to engage said jack when said means is released.

4. A drill rig including a mast, a spudding line jack pivotally mounted for vertical movements on the said mast, a lock member also pivotally mounted for vertical movements on the mast, and means normally disposed to sustain said lock member in raised inoperative position, said lock member being adapted to gravitate to engaged adapted to lock the relation with said is 7 released.

5. A drill rig including a mast, aspudding line ack pivotally mounted for vertical movements on the said mast, power means for actuating said jack, a lock member also pivotally mounted for vertical movements on the mast and above said jack, and. means normally disposed to sustain said lock member in inoperative position, said lock member being adapted to gravitate to engaged relation with said jack when said means is released, said jack being depressed when in locked position whereby the said power means will be rendered inoperative.

' CARTER A. WILLIS.

GORDON J. WILLIS.

REUBEN M. WILLIS.

jack when said means 

